Come on. Now you're being pissy.

[quote="AdmiralQuality"]Chris, want to smooth an LFO? Run it through a Mod mixer and turn the Lag (just a 1 pole LPF) up a bit. [/quote]

You aren't getting the point - its simply wrong and introduces aliasing. The reason you don't notice is because (1) you hear the synth everyday (2) you have everything run at 8x followed by a huge filter to downsample it. Try any other decent synth and do a square wave modulation of the filter. Or try an analog. Hear any clicks? I don't, but I do in Poly-Ana. And I see them in my frequency analyzer and my oscilloscope.

Smoothing with an LPF will get you there a bit but not all the way. What you'd want is a bandlimited, ripplefree square (yes, that is possible), oversample the whole thing twice, and PRESTO - alias free square wave LFO.

Easiest way to do it would be BLEP, with an appropriate FIR (that means, NOT windowed sinc). I don't know how your normal oscillators do their thing but BLEP is trivial to do and can get you imperceivable amounts of alias without any oversampling. I know this because I've done it.

And yes, I am saying that 8x oversampling everything is overkill. Good oscillators dont need any oversampling, the modulation stuff suffices with 2x modulation. I assume your filter is a ladder filter so that needs 2x oversampling as well, and since you're audio-rate modulating the filter, 4x. So really, all you need is 4x oversampling. Thats half the CPU power needed right there. I'm sure a few extra BLEP oscillators wont increase CPU by more than half. ;)